Gas-kindling grate



S. GROTKOWSKI.

GAS KINDLING GRATE.

APPLICATION man MAR. 12. 1919.

1 3 44, 34: 1 Patented June 22, 1920.

W I TNESS UNITED STATES PATENT OFFICE.

STANLEY GBOTKOWSKI, 0F CHICOPEE, MASSACHUSETTS.

GAS-KINDLI'NG GRA'IE.

Specification of Letters Patent. Patented Ju 22 1920 Application filed March 12, 1919. Serial No. 282,201.

row of projections or lugs on each side thereof, and is further provided on one side with a row of smaller projections or guards, said bar having therein passages which communicate with the outside, at points adjacent to said guards, from the interior of the bar,

together with such other 'parts and members as may be necessary or desirable in order to render the device complete and serviceable, all as hereinafter set forth.

The primary object of my invention is to provide for a coal-burning grate, or as a part thereof, a bar which is capable of supplying gas to and having the same burned within a mass of coal on such grate, for the purpose of kindling the coal, such bar being simple, strong, durable, and withal highly efiicient and entirely satisfactoif'y. After the coal is kindled properly or su ciently, the gas is usually turned off from the bar in question, and the latter then serves in the capacity of an ordinary grate bar. Thus I am able to start the fire and bring it to a high degree of efiiciency in a very short time as compared to the time it takes to kindle in'tlie old way with wood or charcoal, inasmuch as the gas, which is supplied to the very center of the coal and there burned, provides a flame that is intense and so quickly ignites the surrounding coal. I

It is clearly apparent, therefore, that my grate bar is very convenient and economical.

A coalburning grate comprises two or more bars, and, while a grate might be made up entirely of my bars, it is generally not necessary to provide more than one of the gas-burnin bars for any single grate.

Other ob ects and advantages will appear in the course of the following description.

I attain the objects and secure the advantages of my invention by the means illus trated in the accompanying drawings, in which Figure 1 1s a side elevation of a grate bar which embodies a practical form of my invention; Fig. 2, a central, longitudinal section through said bar, taken on lines 22, looking in the direction of theasso-' ciated arrow, in-Fig. 5; Fig. 3, a fragmentary end elevation of the rear-end portion of the grate, to which the gas-supply pipe is attached, showing means for a different 'kind of connection from that shown. in

the first view; Fig. 4, a left-hand end elevation of said bar, and, Fig. 5, a cross-section through the bar, on lines 5-5, looking in the direction of the associated arrow, Fig. 2. g i

Similar reference characters designate similar parts throughout the several views.

The grate bar as illustrated in the drawings consists of a body 1 provided with frontand rear-end extensions 3 and 4, respectively, and with lateral projections or lugs 6 and lateral projections or guards 7, and having a central, longitudinal passage 8, and lateral passages 9.

The extensions 3 and 4 are the axial, supporting members of the bar, and the latter turns thereon and therewith when the same is revolved or shaken. At the front end of the extension 3 is. an angular part 10 for the shaker. The extension 4 is adapted to type, and may be provided with a lug 11 to fit the key-way in such cog-wheel. The

rear end of the extension 4 is screwranged with their outermost angles, that is,

the angles most remote from the axis of the grate or of the body 1, in planes which intersect said axis and the sides of said body. The guards 7 are preferably pyramidal in shape, and they are located on one side of the body 1, adjacent to one edge thereof,

and between the lugs 6 which project from such side.

The passage 8 extends through the body 1, from the front-end portion thereof, and through the extension 4 to open at the rear end of said extension, with which end the supply pipe or tube (not shown) for the gas is connected.

The passages 9 open at their inner ends into the passage 8, and at their outer ends through the same side of the body 1 from which the guards '7 extend. The guards 7 are at the edge of their side of the body 1 which edge is in advance of the opposite or companion edge of said side, in the normal direction of rotation of the bar, so as to protect the outer-ends'of the passages 9 from ashes when said bar is rotated. The passages 9 are preferably tangential to the passage 8 and arranged at an incline the plane of which if continued would be parallel with the inner faces of the guards 7, behind which in the normal direction of rotation said passages are situated, so as to direct the gas which passes through them obliquely from between the lugs 6, rather than radially from between said lugs. Not only is the gas thus directed to better advantage, being discharged by the inclined passages 9 obliquely into the center of the mass of coal which is to be ignited, but there is less liability that ashes will enter such passages to a serious extent, and such passages being tangential to the circumference of the passage 8, as well as obliquely to the side of the body 1 through which they open, are readily kept clean of ashes by the gas which passes through them under the usual or normal pressure applied to gas. In fact, the gas in.

passing through the passages 8 and 9 blows out all of said passages, through the passages 9, and so keeps them clean.

In practice, the grate bar should first be positioned with the side of the body 1,

wvhich carries the uards 7 and throu h which the passages 9 open, uppermost, and then the coal is put on. The lugs 6 which are now projecting upwardly, assisted to some extent by the guards 7, prevent the coal from resting directly on said body and from closing the outer ends of the passages 9. Thus ample space is left in the mass of coal for the gas when it is turned on and ignited. The gas is next turned on and permitted to escape through the passages 8 and 9 into the coal, and it is then and there ignited.

The coal is quickly kindled from the burning gas which is in the very midst thereof. The gas is turned off as soon as the coal is well kindled, and thereafter, until the operation of rekindling is repeated, the bar functions like any ordinary grate bar.

am aware that various kinds of combined gasand coal-burning grates have been invented, and I do not seek to cover such a grate, but only a gas-kindling grate of the special construction herein shown and described.

hat I claim as my invention, and de sire to secure by Letters Patent, is-

1. A gas kindling grate bar consisting of a body triangular in cross-section and provided with end extensions, triangular lugs on the three sides of said body, the outer most angles of said lugs being in planes which are radial to 'the axis and intersect the sides of said body, and guards on one side of said body between said lugs on that side, said body having therein a longitudinal passage which extends through one of said extensions and opens at the outer end thereof, and also having therein lateral passages which open atone end into said longitudinal passage and at the other end through the side of said body which carries said guards.

2. A. gas-kindling grate bar consisting of a body triangular in cross-section and provided with end extensions, triangular lugs on the three sides of said body, the outermost angles of said lugs being in planes which are radial to the axis and intersect the sides of said body, and pyramid shaped guards on one side of said body between said lugs on that side, said body having therein a longitudinal passage which extends through one of said extensions and opens at the outer end thereof, and also having therein tangential inclined passages which open at one end into said longitudinal passage and at the other end through the side of said body which carries said guards.

3. A gas-kindling grate bar consisting of a body triangular in cross-section and provided with end extensions, one of said extensions being adapted to have akgfiied thereto a tubular gas member, triangular lugs on the three sides of said body, the outermost angles of said lugs beiing in planes which are radial to the axis and intersect the sides of said body, and pyrar idshaped guards at one edge on one sid .of said body between said lugs on that side, said body having therein a longitudinal passage which extends through one of said extensions and opens at the outer end thereof, and also having therein tangential inclined passages which open at one end into said longitudinal passage and at the other end through the side of said body which carries said guards.-

STANLEY GROTKOWSKI.

Witnesses F. A. CUTTER, ARTHUR A. BETH. 

